Public Broadcasting Service - Universal Gravitation lyrics

Isaac Newton wondered 'what keeps earth in its orbit?'; He went outside to think and went into his apple orchard; An apple fell and hit his head, how could he ignore this? Then he realized they were caused by the same forces; This was a problem now that Newton knew that he could tackle; The sun pulls on the earth just like the earth pulls on the apple; He went inside his house and started making calculations; What did he find? Universal gravitation; Between two objects there's a weak force of attraction; The force gets stronger as we start to deal with bigger ma**es; As the objects move apart then the force decreases; Isaac Newton showed the world he was a true genius! So the earth makes the apply fall rapidly; And the sun pulls the earth around the galaxy; When you're reaching for the stars don't get mad at me; Only one thing can hold you down... Gravity